SAC Code of Freight Charge in Goods Invoice

Dear Sir,

Pls advice whether can I mention SAC Code of Freight / Packing Charge in Sale Invoice of Electrical Goods item..

If I ignore to mention SAC Code then Hsn / Sac Summary and Sales figure will be mismatched in Tally GSTR 1 Report.
In my opinion, Sac Code of Freight and Packing Charges agt. Sales are to be ignored since these are all Supply of Goods not Service.

Pls advise your opinion.

Thanks.